Ansible playbook installed

The following versions are installed

postgres = 10
patroni = latest
consul = 1.6.0
haproxy = latest
keepalived = latest
consul-template = 0.25.0

REQUIRED!

1) Minimum number of nodes = 3
2) RedHat 7 or CentOS 7 or Ubuntu >=16.04 or Debian 8

Variable settings

Change the variable in the host.ini file (inventory/hosts.ini)

---
test-01.mycompany.loc priority_num=<weight> # to the example 100
test-02.mycompany.loc priority_num=<weight> # to the example 200
test-03.mycompany.loc priority_num=<weight> # to the example 300

Change the variable in the host.ini file (inventory/group_vars/all.yml)

---
vip_address: <your vip address>       # to the example 192.168.100.100
vrouter_id: <your virtual router id>  # to the example 45

change the vaiable in the patroni (roles/patroni/defaults/main.yml)

---
# Setting yaml file
# General recommendation to set the shared_buffers is as follows.
#
#    Below 2GB memory, set the value of shared_buffers to 20% of total system memory.
#    
#    Below 32GB memory, set the value of shared_buffers to 25% of total system memory.
#            
#    Above 32GB memory, set the value of shared_buffers to 8GB

patroni_sb: <size_shared_memory> # to example 750MB 

Dependencies

No dependency

Running playbook

ansible-playbook -i inventory/hosts.ini install-pg-cluster.yml -v

After installing the playbook, you can go to the haproxy statistics page for vip

Author Information

Vatolin Alexey